Embedded Artists / DMBasicGUI

A basic graphics package for the LPC4088 Display Module.

Dependents:   lpc4088_displaymodule_demo_sphere sampleGUI sampleEmptyGUI lpc4088_displaymodule_fs_aid ... more

Fork of DMBasicGUI by EmbeddedArtists AB

Application/AppColorPicker.cpp@8:19a6b70d42b1, 2015-01-17 (annotated)

Committer:
embeddedartists
Date:
Sat Jan 17 14:07:25 2015 +0100
Revision:
8:19a6b70d42b1
Parent:
3:3fabfe3339b8
Child:
11:265884fa7fdd
- Updated apps to wait for signal before reading touch event. This eliminates polling and waits

- Redesigned the AppLauncher to listen accept touch events and turn them into signals

Who changed what in which revision?

UserRevisionLine numberNew contents of line
embeddedartists 0:4977187e90c7 1 /*
embeddedartists 0:4977187e90c7 2 * Copyright 2014 Embedded Artists AB
embeddedartists 0:4977187e90c7 3 *
embeddedartists 0:4977187e90c7 4 * Licensed under the Apache License, Version 2.0 (the "License");
embeddedartists 0:4977187e90c7 5 * you may not use this file except in compliance with the License.
embeddedartists 0:4977187e90c7 6 * You may obtain a copy of the License at
embeddedartists 0:4977187e90c7 7 *
embeddedartists 0:4977187e90c7 8 * http://www.apache.org/licenses/LICENSE-2.0
embeddedartists 0:4977187e90c7 9 *
embeddedartists 0:4977187e90c7 10 * Unless required by applicable law or agreed to in writing, software
embeddedartists 0:4977187e90c7 11 * distributed under the License is distributed on an "AS IS" BASIS,
embeddedartists 0:4977187e90c7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
embeddedartists 0:4977187e90c7 13 * See the License for the specific language governing permissions and
embeddedartists 0:4977187e90c7 14 * limitations under the License.
embeddedartists 0:4977187e90c7 15 */
embeddedartists 0:4977187e90c7 16
embeddedartists 0:4977187e90c7 17
embeddedartists 0:4977187e90c7 18 #include "mbed.h"
embeddedartists 0:4977187e90c7 19 #include "EthernetInterface.h"
embeddedartists 0:4977187e90c7 20 #include "AppColorPicker.h"
embeddedartists 0:4977187e90c7 21 #include "lpc_swim_font.h"
embeddedartists 0:4977187e90c7 22
embeddedartists 0:4977187e90c7 23 /******************************************************************************
embeddedartists 0:4977187e90c7 24 * Defines and typedefs
embeddedartists 0:4977187e90c7 25 *****************************************************************************/
embeddedartists 0:4977187e90c7 26
embeddedartists 0:4977187e90c7 27 #define BOX_SIDE 192 //256
embeddedartists 0:4977187e90c7 28
embeddedartists 0:4977187e90c7 29 #define BTN_WIDTH 65
embeddedartists 0:4977187e90c7 30 #define BTN_HEIGHT 40
embeddedartists 0:4977187e90c7 31 #define BTN_OFF 20
embeddedartists 0:4977187e90c7 32
embeddedartists 0:4977187e90c7 33 /******************************************************************************
embeddedartists 0:4977187e90c7 34 * Global variables
embeddedartists 0:4977187e90c7 35 *****************************************************************************/
embeddedartists 0:4977187e90c7 36
embeddedartists 0:4977187e90c7 37 /******************************************************************************
embeddedartists 0:4977187e90c7 38 * Private functions
embeddedartists 0:4977187e90c7 39 *****************************************************************************/
embeddedartists 0:4977187e90c7 40
embeddedartists 0:4977187e90c7 41 static void buttonClicked(uint32_t x)
embeddedartists 0:4977187e90c7 42 {
embeddedartists 0:4977187e90c7 43 bool* done = (bool*)x;
embeddedartists 0:4977187e90c7 44 *done = true;
embeddedartists 0:4977187e90c7 45 }
embeddedartists 0:4977187e90c7 46
embeddedartists 0:4977187e90c7 47 void AppColorPicker::draw()
embeddedartists 0:4977187e90c7 48 {
embeddedartists 0:4977187e90c7 49 // Prepare fullscreen
embeddedartists 0:4977187e90c7 50 swim_window_open(_win,
embeddedartists 0:4977187e90c7 51 _disp->width(), _disp->height(), // full size
embeddedartists 0:4977187e90c7 52 (COLOR_T*)_fb,
embeddedartists 0:4977187e90c7 53 0,0,_disp->width()-1, _disp->height()-1, // window position and size
embeddedartists 0:4977187e90c7 54 1, // border
embeddedartists 0:4977187e90c7 55 WHITE, WHITE, BLACK); // colors: pen, backgr, forgr
embeddedartists 0:4977187e90c7 56 swim_set_title(_win, "Color Picker", BLACK);
embeddedartists 0:4977187e90c7 57
embeddedartists 0:4977187e90c7 58 swim_window_open(_colorwin,
embeddedartists 0:4977187e90c7 59 _disp->width(), _disp->height(), // full size
embeddedartists 0:4977187e90c7 60 (COLOR_T*)_fb,
embeddedartists 0:4977187e90c7 61 50,(_disp->height()-BOX_SIDE)/2,50+BOX_SIDE-1, BOX_SIDE+(_disp->height()-BOX_SIDE)/2, // window position and size
embeddedartists 0:4977187e90c7 62 0, // border
embeddedartists 0:4977187e90c7 63 WHITE, WHITE, BLACK); // colors: pen, backgr, forgr
embeddedartists 0:4977187e90c7 64
embeddedartists 0:4977187e90c7 65
embeddedartists 0:4977187e90c7 66 uint16_t r, g, b;
embeddedartists 0:4977187e90c7 67 uint16_t rx = BOX_SIDE/32;
embeddedartists 0:4977187e90c7 68 //uint16_t gx = BOX_SIDE/64;
embeddedartists 0:4977187e90c7 69 uint16_t bx = BOX_SIDE/32;
embeddedartists 0:4977187e90c7 70 //uint16_t ry = BOX_SIDE/32;
embeddedartists 0:4977187e90c7 71 uint16_t gy = BOX_SIDE/64;
embeddedartists 0:4977187e90c7 72 //uint16_t by = BOX_SIDE/32;
embeddedartists 0:4977187e90c7 73 uint16_t color;
embeddedartists 0:4977187e90c7 74 for (int x = 0; x < BOX_SIDE; x++) {
embeddedartists 0:4977187e90c7 75 r = (x/rx);
embeddedartists 0:4977187e90c7 76 b = 0x1f - (x/bx);
embeddedartists 0:4977187e90c7 77 color = ((r & 0x1f) << 11) | ((b & 0x1f) << 0);
embeddedartists 0:4977187e90c7 78 for (int y = 0; y < BOX_SIDE; y++) {
embeddedartists 0:4977187e90c7 79 g = (y/gy);
embeddedartists 0:4977187e90c7 80 _colorwin->pen = color | ((g & 0x3f) << 5);
embeddedartists 0:4977187e90c7 81 swim_put_pixel(_colorwin, x, y);
embeddedartists 0:4977187e90c7 82 }
embeddedartists 0:4977187e90c7 83 }
embeddedartists 0:4977187e90c7 84
embeddedartists 0:4977187e90c7 85 _btn = new Button("Done", _win->fb, _win->xpmax - BTN_OFF - BTN_WIDTH, _win->ypmax - BTN_OFF - BTN_HEIGHT, BTN_WIDTH, BTN_HEIGHT);
embeddedartists 0:4977187e90c7 86 _btn->draw();
embeddedartists 0:4977187e90c7 87 }
embeddedartists 0:4977187e90c7 88
embeddedartists 0:4977187e90c7 89 /******************************************************************************
embeddedartists 0:4977187e90c7 90 * Public functions
embeddedartists 0:4977187e90c7 91 *****************************************************************************/
embeddedartists 0:4977187e90c7 92
embeddedartists 0:4977187e90c7 93 AppColorPicker::AppColorPicker() : _disp(NULL), _win(NULL), _colorwin(NULL), _fb(NULL), _btn(NULL)
embeddedartists 0:4977187e90c7 94 {
embeddedartists 0:4977187e90c7 95 }
embeddedartists 0:4977187e90c7 96
embeddedartists 0:4977187e90c7 97 AppColorPicker::~AppColorPicker()
embeddedartists 0:4977187e90c7 98 {
embeddedartists 0:4977187e90c7 99 teardown();
embeddedartists 0:4977187e90c7 100 }
embeddedartists 0:4977187e90c7 101
embeddedartists 0:4977187e90c7 102 bool AppColorPicker::setup()
embeddedartists 0:4977187e90c7 103 {
embeddedartists 0:4977187e90c7 104 _disp = DMBoard::instance().display();
embeddedartists 0:4977187e90c7 105 _win = (SWIM_WINDOW_T*)malloc(sizeof(SWIM_WINDOW_T));
embeddedartists 0:4977187e90c7 106 _colorwin = (SWIM_WINDOW_T*)malloc(sizeof(SWIM_WINDOW_T));
embeddedartists 0:4977187e90c7 107 _fb = _disp->allocateFramebuffer();
embeddedartists 0:4977187e90c7 108
embeddedartists 0:4977187e90c7 109 return (_win != NULL && _colorwin != NULL && _fb != NULL);
embeddedartists 0:4977187e90c7 110 }
embeddedartists 0:4977187e90c7 111
embeddedartists 0:4977187e90c7 112 void AppColorPicker::runToCompletion()
embeddedartists 0:4977187e90c7 113 {
embeddedartists 0:4977187e90c7 114 // Alternative 1: use the calling thread's context to run in
embeddedartists 0:4977187e90c7 115 bool done = false;
embeddedartists 0:4977187e90c7 116 draw();
embeddedartists 0:4977187e90c7 117 _btn->setAction(buttonClicked, (uint32_t)&done);
embeddedartists 0:4977187e90c7 118 void* oldFB = _disp->swapFramebuffer(_fb);
embeddedartists 0:4977187e90c7 119
embeddedartists 0:4977187e90c7 120 // Wait for touches
embeddedartists 0:4977187e90c7 121 TouchPanel* touch = DMBoard::instance().touchPanel();
embeddedartists 8:19a6b70d42b1 122 touch_coordinate_t coord;
embeddedartists 0:4977187e90c7 123 char buf[10];
embeddedartists 0:4977187e90c7 124 swim_set_pen_color(_win, BLACK);
embeddedartists 0:4977187e90c7 125 while(!done) {
embeddedartists 8:19a6b70d42b1 126 // wait for a new touch signal (signal is sent from AppLauncher,
embeddedartists 8:19a6b70d42b1 127 // which listens for touch events)
embeddedartists 8:19a6b70d42b1 128 Thread::signal_wait(0x1);
embeddedartists 3:3fabfe3339b8 129 if (touch->read(coord) == TouchPanel::TouchError_Ok) {
embeddedartists 3:3fabfe3339b8 130 if (coord.z > 0 &&
embeddedartists 3:3fabfe3339b8 131 coord.x >= _colorwin->xpmin && coord.x <= _colorwin->xpmax &&
embeddedartists 3:3fabfe3339b8 132 coord.y >= _colorwin->ypmin && coord.y <= _colorwin->ypmax) {
embeddedartists 3:3fabfe3339b8 133 int x = coord.x - _colorwin->xpmin;
embeddedartists 3:3fabfe3339b8 134 int y = coord.y - _colorwin->ypmin;
embeddedartists 3:3fabfe3339b8 135 COLOR_T c = ((x/(BOX_SIDE/32))<<11) | ((y/(BOX_SIDE/64))<<5) | ((0x1f-(x/(BOX_SIDE/32)))<<0);
embeddedartists 3:3fabfe3339b8 136 swim_set_fill_color(_win, c);
embeddedartists 3:3fabfe3339b8 137 swim_put_box(_win, 350, 70, 430, 150);
embeddedartists 3:3fabfe3339b8 138 sprintf(buf, "0x%04x ", c);
embeddedartists 3:3fabfe3339b8 139 swim_put_text_xy(_win, buf, 350, 160);
embeddedartists 3:3fabfe3339b8 140 }
embeddedartists 3:3fabfe3339b8 141 if (_btn->handle(coord.x, coord.y, coord.z > 0)) {
embeddedartists 3:3fabfe3339b8 142 _btn->draw();
embeddedartists 3:3fabfe3339b8 143 }
embeddedartists 0:4977187e90c7 144 }
embeddedartists 0:4977187e90c7 145 }
embeddedartists 0:4977187e90c7 146
embeddedartists 0:4977187e90c7 147 // User has clicked the button, restore the original FB
embeddedartists 0:4977187e90c7 148 _disp->swapFramebuffer(oldFB);
embeddedartists 0:4977187e90c7 149 swim_window_close(_win);
embeddedartists 0:4977187e90c7 150 swim_window_close(_colorwin);
embeddedartists 0:4977187e90c7 151 }
embeddedartists 0:4977187e90c7 152
embeddedartists 0:4977187e90c7 153 bool AppColorPicker::teardown()
embeddedartists 0:4977187e90c7 154 {
embeddedartists 0:4977187e90c7 155 if (_win != NULL) {
embeddedartists 0:4977187e90c7 156 free(_win);
embeddedartists 0:4977187e90c7 157 _win = NULL;
embeddedartists 0:4977187e90c7 158 }
embeddedartists 0:4977187e90c7 159 if (_colorwin != NULL) {
embeddedartists 0:4977187e90c7 160 free(_colorwin);
embeddedartists 0:4977187e90c7 161 _colorwin = NULL;
embeddedartists 0:4977187e90c7 162 }
embeddedartists 0:4977187e90c7 163 if (_fb != NULL) {
embeddedartists 0:4977187e90c7 164 free(_fb);
embeddedartists 0:4977187e90c7 165 _fb = NULL;
embeddedartists 0:4977187e90c7 166 }
embeddedartists 0:4977187e90c7 167 if (_btn != NULL) {
embeddedartists 0:4977187e90c7 168 delete _btn;
embeddedartists 0:4977187e90c7 169 _btn = NULL;
embeddedartists 0:4977187e90c7 170 }
embeddedartists 0:4977187e90c7 171 return true;
embeddedartists 0:4977187e90c7 172 }
embeddedartists 0:4977187e90c7 173
embeddedartists 0:4977187e90c7 174